EvaluationofAydughmushDamReservoirWaterQualitybyNational ...applications.emro.who.int/imemrf/Iran_J_Health_Environ/Iran_J... · SanitationFoundationWaterQualityIndex(NSF-WQI) andWaterQualityParameterChanges

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Evaluation of Aydughmush Dam ReservoirWater Quality by National

Sanitation Foundation Water Quality Index (NSF-WQI)

and Water Quality Parameter Changes

Shokuhi R.1, *Hosinzadeh E.2, Roshanaei G.1, Alipour M.3, Hoseinzadeh S.4

1Department of Environmental Health Engineering, School of Public Health, Hamadan University of Medical Sciences, Hamadan,

Iran2Department of Environmental Health Engineering, School of Public Health, Khoram abad University of Medical Sciences,

Lorestan, Iran3Department of Biostatistics, School of Public Health, Hamadan University of Medical SciencesHamadan, Iran

4Department of Civil engineering, School of Engineering, Maragheh University, East Azerbaijan, Iran

Received; 23 July 2011 Accepted; 22 October 2011

ABSTRACT

Background and Objectives: Aydughmush dam was built on Aydughmush River at !"km in

southwest of Mianeh City. The dam is multipurpose and its main aims are the spring floods control,

supplying potable water for villages and providing irrigation water. Different pollutants which

probably discharge to the river finally enter to the dam reservoir so; this study focuses on evaluating

the quality of the dam reservoir.

Materials and Methods: In this cross sectional study standard field parameters including dissolved

oxygen, temperature, Biochemical and chemical oxygen Demand, Most Probable Number of

Coliforms, Fecal Coliform, Turbidity, Total Dissolved Solids, Total Solids, pH, conductivity and

others were measured at eight different stations during the spring and summer in 2010. Sampling

points were selected on the basis of their importance.Water quality index was calculated using water

quality index calculator given by National Sanitation Foundation (NSF) information system.

Results: The highest value of WQI of the samples was 84.89 in A3 station in July while the lowest

value was 67.96 in A2 station in May. The lower value of WQI has been found mainly due to the

slightly lower value of DO in the dam reservoir water. Most of the water samples were found within

Good category of National Sanitation Foundation Water Quality Index (NSF-WQI). Comparison

of the measured parameters based on the sampling stations and various months by variance and

t-student analysis showed a significant relationship for some parameters(P<0.05). Nutrient budget

determination indicates that the concentration of phosphate, nitrite, nitrate and ammonia at inlet are

higher than outlet of the dam reservoir.

Conclusion: The calculated (WQI) showed good water quality. Based on the results of NSFQWI

calculations, the dam reservoir water quality is suitable for various purposes

Keywords:Water Quality Index, NSFWQI, Dam Reservoir, Water Quality

Iran. J. Health & Environ., 2012, Vol. 4, No. 4

*Corresponding Author: [email protected]

Tel:+98 811 83 800, Fax:

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Documents

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